Error - Stock Balance

[fderyckel]

I tried to open the Stock balance report.

Traceback (most recent call last):
File "/home/frappe/frappe-bench/apps/frappe/frappe/app.py", line 55, in application
response = frappe.handler.handle()
File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 19, in handle
execute_cmd(cmd)
File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 36, in execute_cmd
ret = frappe.call(method, *_frappe.form_dict)
File "/home/frappe/frappe-bench/apps/frappe/frappe/init.py", line 854, in call
return fn(_args, **newargs)
File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/query_report.py", line 88, in run
res = frappe.get_attr(method_name)(frappe._dict(filters))
File "/home/frappe/frappe-bench/apps/erpnext/erpnext/stock/report/stock_balance/stock_balance.py", line 16, in execute
iwb_map = get_item_warehouse_map(filters)
File "/home/frappe/frappe-bench/apps/erpnext/erpnext/stock/report/stock_balance/stock_balance.py", line 88, in get_item_warehouse_map
from_date = getdate(filters["from_date"])
KeyError: u'from_date'

[nabinhait]

Pushed a potential fix, can you please update and check?